Energy Conservation – Attic Insulation

The roof or attic is without a doubt the most important area to insulate in your home. The diagram below shows the average heat loss through various points of the home. Though the average heat loss through the attic is 26%, it can be as great as 60% or more in many homes. Structural heat loss occurs through the roof and attic, all because heat rises. Adding attic insulation can be one of the most cost effective ways to reduce your energy bills and add to the comfort of the home.


This is a project that should be carried out by a professional. It is vitally important to add or maintain the proper ventilation in the attic with baffles. Also there are special devices that need to be added to many recessed lights, fans etc. If these are not inspected and taken into account, there can be a host of problems from mold growth to even fire hazards.

Recommended Levels of Insulation
Insulation levels are specified by R-Value. R-Value is a measure of insulation’s ability to resist heat traveling through it. The higher the R-Value the better the thermal performance of the insulation. The table below shows what levels of insulation are cost-effective for different climates and locations in the home.

Recommended insulation levels for retrofitting existing wood-framed buildings

Zone Add Insulation to Attic
Uninsulated Attic Existing 3–4 Inches of Insulation
1 R30 to R49 R25 to R30
2 R30 to R60 R25 to R38
3 R30 to R60 R25 to R38
4 R38 to R60 R38
5 to 8 R49 to R60 R38 to R49

Mercury Home Remodeling will come to your home, no obligation and no cost for the visit. At that time we will inspect your attic and then provide you with a comprehensive analysis and cost of what insulation improvements are recommended for your attic.

Additionally, we also offer a full line of energy efficient windows as well as insulated siding.
So call me and let’s get the process started toward reducing your energy bills and increasing your comfort in your home.

Roger Blitz, president
Mercury Home Remodeling